Differential D34940 Diff 105088 sys/geom/multipath/g_multipath.c

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sys/geom/multipath/g_multipath.c

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g_multipath_ctl_add_name(struct gctl_req req, struct g_class mp,		g_multipath_ctl_add_name(struct gctl_req req, struct g_class mp,
const char *name)		const char *name)
{		{
struct g_multipath_softc *sc;		struct g_multipath_softc *sc;
struct g_geom *gp;		struct g_geom *gp;
struct g_consumer *cp;		struct g_consumer *cp;
struct g_provider *pp;		struct g_provider *pp;
const char *mpname;		const char *mpname;
static const char devpf[6] = _PATH_DEV;
int error;		int error;

g_topology_assert();		g_topology_assert();

mpname = gctl_get_asciiparam(req, "arg0");		mpname = gctl_get_devname(req, "arg0");
if (mpname == NULL) {		if (mpname == NULL)
gctl_error(req, "No 'arg0' argument");
return;		return;
}
gp = g_multipath_find_geom(mp, mpname);		gp = g_multipath_find_geom(mp, mpname);
if (gp == NULL) {		if (gp == NULL) {
gctl_error(req, "Device %s is invalid", mpname);		gctl_error(req, "Device %s is invalid", mpname);
return;		return;
}		}
sc = gp->softc;		sc = gp->softc;

if (strncmp(name, devpf, 5) == 0)
name += 5;
pp = g_provider_by_name(name);		pp = g_provider_by_name(name);
if (pp == NULL) {		if (pp == NULL) {
gctl_error(req, "Provider %s is invalid", name);		gctl_error(req, "Provider %s is invalid", name);
return;		return;
}		}

/*		/*
* Check to make sure parameters match.		* Check to make sure parameters match.
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static void		static void
g_multipath_ctl_prefer(struct gctl_req req, struct g_class mp)		g_multipath_ctl_prefer(struct gctl_req req, struct g_class mp)
{		{
struct g_geom *gp;		struct g_geom *gp;
struct g_multipath_softc *sc;		struct g_multipath_softc *sc;
struct g_consumer *cp;		struct g_consumer *cp;
const char name, mpname;		const char name, mpname;
static const char devpf[6] = _PATH_DEV;
int *nargs;		int *nargs;

g_topology_assert();		g_topology_assert();

mpname = gctl_get_asciiparam(req, "arg0");		mpname = gctl_get_devname(req, "arg0");
if (mpname == NULL) {		if (mpname == NULL)
gctl_error(req, "No 'arg0' argument");
return;		return;
}
gp = g_multipath_find_geom(mp, mpname);		gp = g_multipath_find_geom(mp, mpname);
if (gp == NULL) {		if (gp == NULL) {
gctl_error(req, "Device %s is invalid", mpname);		gctl_error(req, "Device %s is invalid", mpname);
return;		return;
}		}
sc = gp->softc;		sc = gp->softc;

nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));		nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
if (nargs == NULL) {		if (nargs == NULL) {
gctl_error(req, "No 'nargs' argument");		gctl_error(req, "No 'nargs' argument");
return;		return;
}		}
if (*nargs != 2) {		if (*nargs != 2) {
gctl_error(req, "missing device");		gctl_error(req, "missing device");
return;		return;
}		}

name = gctl_get_asciiparam(req, "arg1");		name = gctl_get_devname(req, "arg1");
if (name == NULL) {		if (name == NULL)
gctl_error(req, "No 'arg1' argument");
return;		return;
}
if (strncmp(name, devpf, 5) == 0) {
name += 5;
}

LIST_FOREACH(cp, &gp->consumer, consumer) {		LIST_FOREACH(cp, &gp->consumer, consumer) {
if (cp->provider != NULL		if (cp->provider != NULL
&& strcmp(cp->provider->name, name) == 0)		&& strcmp(cp->provider->name, name) == 0)
break;		break;
}		}

if (cp == NULL) {		if (cp == NULL) {
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}		}

static void		static void
g_multipath_ctl_add(struct gctl_req req, struct g_class mp)		g_multipath_ctl_add(struct gctl_req req, struct g_class mp)
{		{
struct g_geom *gp;		struct g_geom *gp;
const char mpname, name;		const char mpname, name;

mpname = gctl_get_asciiparam(req, "arg0");		mpname = gctl_get_devname(req, "arg0");
if (mpname == NULL) {		if (mpname == NULL)
gctl_error(req, "No 'arg0' argument");
return;		return;
}
gp = g_multipath_find_geom(mp, mpname);		gp = g_multipath_find_geom(mp, mpname);
if (gp == NULL) {		if (gp == NULL) {
gctl_error(req, "Device %s not found", mpname);		gctl_error(req, "Device %s not found", mpname);
return;		return;
}		}

name = gctl_get_asciiparam(req, "arg1");		name = gctl_get_devname(req, "arg1");
if (name == NULL) {		if (name == NULL)
gctl_error(req, "No 'arg1' argument");
return;		return;
}
g_multipath_ctl_add_name(req, mp, name);		g_multipath_ctl_add_name(req, mp, name);
}		}

static void		static void
g_multipath_ctl_create(struct gctl_req req, struct g_class mp)		g_multipath_ctl_create(struct gctl_req req, struct g_class mp)
{		{
struct g_multipath_metadata md;		struct g_multipath_metadata md;
struct g_multipath_softc *sc;		struct g_multipath_softc *sc;
struct g_geom *gp;		struct g_geom *gp;
const char mpname, name;		const char mpname, name;
char param[16];		char param[16];
int nargs, i, val;		int nargs, i, val;

g_topology_assert();		g_topology_assert();

nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));		nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
if (*nargs < 2) {		if (*nargs < 2) {
gctl_error(req, "wrong number of arguments.");		gctl_error(req, "wrong number of arguments.");
return;		return;
}		}

mpname = gctl_get_asciiparam(req, "arg0");		mpname = gctl_get_devname(req, "arg0");
if (mpname == NULL) {		if (mpname == NULL)
gctl_error(req, "No 'arg0' argument");
return;		return;
}
gp = g_multipath_find_geom(mp, mpname);		gp = g_multipath_find_geom(mp, mpname);
if (gp != NULL) {		if (gp != NULL) {
gctl_error(req, "Device %s already exist", mpname);		gctl_error(req, "Device %s already exist", mpname);
return;		return;
}		}

memset(&md, 0, sizeof(md));		memset(&md, 0, sizeof(md));
strlcpy(md.md_magic, G_MULTIPATH_MAGIC, sizeof(md.md_magic));		strlcpy(md.md_magic, G_MULTIPATH_MAGIC, sizeof(md.md_magic));
Show All 14 Lines	if (gp == NULL) {
gctl_error(req, "GEOM_MULTIPATH: cannot create geom %s/%s\n",		gctl_error(req, "GEOM_MULTIPATH: cannot create geom %s/%s\n",
md.md_name, md.md_uuid);		md.md_name, md.md_uuid);
return;		return;
}		}
sc = gp->softc;		sc = gp->softc;

for (i = 1; i < *nargs; i++) {		for (i = 1; i < *nargs; i++) {
snprintf(param, sizeof(param), "arg%d", i);		snprintf(param, sizeof(param), "arg%d", i);
name = gctl_get_asciiparam(req, param);		name = gctl_get_devname(req, param);
		if (name == NULL)
		continue;
g_multipath_ctl_add_name(req, mp, name);		g_multipath_ctl_add_name(req, mp, name);
}		}

if (sc->sc_ndisks != (*nargs - 1))		if (sc->sc_ndisks != (*nargs - 1))
g_multipath_destroy(gp);		g_multipath_destroy(gp);
}		}

static void		static void
g_multipath_ctl_configure(struct gctl_req req, struct g_class mp)		g_multipath_ctl_configure(struct gctl_req req, struct g_class mp)
{		{
struct g_multipath_softc *sc;		struct g_multipath_softc *sc;
struct g_geom *gp;		struct g_geom *gp;
struct g_consumer *cp;		struct g_consumer *cp;
struct g_provider *pp;		struct g_provider *pp;
struct g_multipath_metadata md;		struct g_multipath_metadata md;
const char *name;		const char *name;
int error, *val;		int error, *val;

g_topology_assert();		g_topology_assert();

name = gctl_get_asciiparam(req, "arg0");		name = gctl_get_devname(req, "arg0");
if (name == NULL) {		if (name == NULL)
gctl_error(req, "No 'arg0' argument");
return;		return;
}
gp = g_multipath_find_geom(mp, name);		gp = g_multipath_find_geom(mp, name);
if (gp == NULL) {		if (gp == NULL) {
gctl_error(req, "Device %s is invalid", name);		gctl_error(req, "Device %s is invalid", name);
return;		return;
}		}
sc = gp->softc;		sc = gp->softc;
val = gctl_get_paraml(req, "active_active", sizeof(*val));		val = gctl_get_paraml(req, "active_active", sizeof(*val));
if (val != NULL && *val != 0)		if (val != NULL && *val != 0)
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g_multipath_ctl_fail(struct gctl_req req, struct g_class mp, int fail)		g_multipath_ctl_fail(struct gctl_req req, struct g_class mp, int fail)
{		{
struct g_multipath_softc *sc;		struct g_multipath_softc *sc;
struct g_geom *gp;		struct g_geom *gp;
struct g_consumer *cp;		struct g_consumer *cp;
const char mpname, name;		const char mpname, name;
int found;		int found;

mpname = gctl_get_asciiparam(req, "arg0");		mpname = gctl_get_devname(req, "arg0");
if (mpname == NULL) {		if (mpname == NULL)
gctl_error(req, "No 'arg0' argument");
return;		return;
}
gp = g_multipath_find_geom(mp, mpname);		gp = g_multipath_find_geom(mp, mpname);
if (gp == NULL) {		if (gp == NULL) {
gctl_error(req, "Device %s not found", mpname);		gctl_error(req, "Device %s not found", mpname);
return;		return;
}		}
sc = gp->softc;		sc = gp->softc;

name = gctl_get_asciiparam(req, "arg1");		name = gctl_get_devname(req, "arg1");
if (name == NULL) {		if (name == NULL)
gctl_error(req, "No 'arg1' argument");
return;		return;
}

found = 0;		found = 0;
mtx_lock(&sc->sc_mtx);		mtx_lock(&sc->sc_mtx);
LIST_FOREACH(cp, &gp->consumer, consumer) {		LIST_FOREACH(cp, &gp->consumer, consumer) {
if (cp->provider != NULL &&		if (cp->provider != NULL &&
strcmp(cp->provider->name, name) == 0 &&		strcmp(cp->provider->name, name) == 0 &&
(cp->index & MP_LOST) == 0) {		(cp->index & MP_LOST) == 0) {
found = 1;		found = 1;
Show All 22 Lines
{		{
struct g_multipath_softc *sc;		struct g_multipath_softc *sc;
struct g_geom *gp;		struct g_geom *gp;
struct g_consumer cp, cp1;		struct g_consumer cp, cp1;
const char mpname, name;		const char mpname, name;
uintptr_t *cnt;		uintptr_t *cnt;
int found;		int found;

mpname = gctl_get_asciiparam(req, "arg0");		mpname = gctl_get_devname(req, "arg0");
if (mpname == NULL) {		if (mpname == NULL)
gctl_error(req, "No 'arg0' argument");
return;		return;
}
gp = g_multipath_find_geom(mp, mpname);		gp = g_multipath_find_geom(mp, mpname);
if (gp == NULL) {		if (gp == NULL) {
gctl_error(req, "Device %s not found", mpname);		gctl_error(req, "Device %s not found", mpname);
return;		return;
}		}
sc = gp->softc;		sc = gp->softc;

name = gctl_get_asciiparam(req, "arg1");		name = gctl_get_devname(req, "arg1");
if (name == NULL) {		if (name == NULL)
gctl_error(req, "No 'arg1' argument");
return;		return;
}

found = 0;		found = 0;
mtx_lock(&sc->sc_mtx);		mtx_lock(&sc->sc_mtx);
LIST_FOREACH_SAFE(cp, &gp->consumer, consumer, cp1) {		LIST_FOREACH_SAFE(cp, &gp->consumer, consumer, cp1) {
if (cp->provider != NULL &&		if (cp->provider != NULL &&
strcmp(cp->provider->name, name) == 0 &&		strcmp(cp->provider->name, name) == 0 &&
(cp->index & MP_LOST) == 0) {		(cp->index & MP_LOST) == 0) {
found = 1;		found = 1;
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g_multipath_ctl_stop(struct gctl_req req, struct g_class mp)		g_multipath_ctl_stop(struct gctl_req req, struct g_class mp)
{		{
struct g_geom *gp;		struct g_geom *gp;
const char *name;		const char *name;
int error;		int error;

g_topology_assert();		g_topology_assert();

name = gctl_get_asciiparam(req, "arg0");		name = gctl_get_devname(req, "arg0");
if (name == NULL) {		if (name == NULL)
gctl_error(req, "No 'arg0' argument");
return;		return;
}
gp = g_multipath_find_geom(mp, name);		gp = g_multipath_find_geom(mp, name);
if (gp == NULL) {		if (gp == NULL) {
gctl_error(req, "Device %s is invalid", name);		gctl_error(req, "Device %s is invalid", name);
return;		return;
}		}
error = g_multipath_destroy(gp);		error = g_multipath_destroy(gp);
if (error != 0 && error != EINPROGRESS)		if (error != 0 && error != EINPROGRESS)
gctl_error(req, "failed to stop %s (err=%d)", name, error);		gctl_error(req, "failed to stop %s (err=%d)", name, error);
}		}

static void		static void
g_multipath_ctl_destroy(struct gctl_req req, struct g_class mp)		g_multipath_ctl_destroy(struct gctl_req req, struct g_class mp)
{		{
struct g_geom *gp;		struct g_geom *gp;
struct g_multipath_softc *sc;		struct g_multipath_softc *sc;
struct g_consumer *cp;		struct g_consumer *cp;
struct g_provider *pp;		struct g_provider *pp;
const char *name;		const char *name;
uint8_t *buf;		uint8_t *buf;
int error;		int error;

g_topology_assert();		g_topology_assert();

name = gctl_get_asciiparam(req, "arg0");		name = gctl_get_devname(req, "arg0");
if (name == NULL) {		if (name == NULL)
gctl_error(req, "No 'arg0' argument");
return;		return;
}
gp = g_multipath_find_geom(mp, name);		gp = g_multipath_find_geom(mp, name);
if (gp == NULL) {		if (gp == NULL) {
gctl_error(req, "Device %s is invalid", name);		gctl_error(req, "Device %s is invalid", name);
return;		return;
}		}
sc = gp->softc;		sc = gp->softc;

if (sc->sc_uuid[0] != 0 && sc->sc_active != NULL) {		if (sc->sc_uuid[0] != 0 && sc->sc_active != NULL) {
Show All 25 Lines
g_multipath_ctl_rotate(struct gctl_req req, struct g_class mp)		g_multipath_ctl_rotate(struct gctl_req req, struct g_class mp)
{		{
struct g_geom *gp;		struct g_geom *gp;
const char *name;		const char *name;
int error;		int error;

g_topology_assert();		g_topology_assert();

name = gctl_get_asciiparam(req, "arg0");		name = gctl_get_devname(req, "arg0");
if (name == NULL) {		if (name == NULL)
gctl_error(req, "No 'arg0' argument");
return;		return;
}
gp = g_multipath_find_geom(mp, name);		gp = g_multipath_find_geom(mp, name);
if (gp == NULL) {		if (gp == NULL) {
gctl_error(req, "Device %s is invalid", name);		gctl_error(req, "Device %s is invalid", name);
return;		return;
}		}
error = g_multipath_rotate(gp);		error = g_multipath_rotate(gp);
if (error != 0) {		if (error != 0) {
gctl_error(req, "failed to rotate %s (err=%d)", name, error);		gctl_error(req, "failed to rotate %s (err=%d)", name, error);
}		}
}		}

static void		static void
g_multipath_ctl_getactive(struct gctl_req req, struct g_class mp)		g_multipath_ctl_getactive(struct gctl_req req, struct g_class mp)
{		{
struct sbuf *sb;		struct sbuf *sb;
struct g_geom *gp;		struct g_geom *gp;
struct g_multipath_softc *sc;		struct g_multipath_softc *sc;
struct g_consumer *cp;		struct g_consumer *cp;
const char *name;		const char *name;
int empty;		int empty;

sb = sbuf_new_auto();		sb = sbuf_new_auto();

g_topology_assert();		g_topology_assert();
name = gctl_get_asciiparam(req, "arg0");		name = gctl_get_devname(req, "arg0");
if (name == NULL) {		if (name == NULL)
gctl_error(req, "No 'arg0' argument");
return;		return;
}
gp = g_multipath_find_geom(mp, name);		gp = g_multipath_find_geom(mp, name);
if (gp == NULL) {		if (gp == NULL) {
gctl_error(req, "Device %s is invalid", name);		gctl_error(req, "Device %s is invalid", name);
return;		return;
}		}
sc = gp->softc;		sc = gp->softc;
if (sc->sc_active_active == 1) {		if (sc->sc_active_active == 1) {
empty = 1;		empty = 1;
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